Abstract
Chemical comminution is an effective means for size reduction and beneficiation of coal. Sodium hydroxide and isopropyl alcohol (IPA) show synergism in chemical comminution of Illinois No. 6 bituminous coal. This system is effective at low alkali concentrations with low consumption of NaOH. Much of the NaOH consumed is for neutralization of acidity of the coal. The IPA serves only as a reaction medium and could be recovered nearly quantitatively for recycling. The system lends itself to application in preparation of coal-water mixtures and coal-alcohol slurry fuels.
Published Version
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